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Showing 1 to 12 of 12 for “"Microwave filter"”.
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Compact microwave filter designs based on cavity resonators
Cavity resonators are widely used in microwave filters and multiplexers due to their high quality factor and high power handling capability. Compact designs of these filters are important for practical applications, as they are generally bulky. In this thesis, two types of compact microwave filter …
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Method for theoretically determining the locus and location of the transmission zeros in microwave filter networks
… of positively and negatively cross-coupled RF or microwave bandpass filter networks. Bandpass filters can be effectively designed by adjusting the locations of TZ's in the complex s-domain. To locate TZ's, this practical method uses chain matrices for subsystems (discrete parts of the network) of …
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A Post-Fabrication Tuning Method for a Varactor-Tuned Microstrip Filter using the Space Mapping Technique
The RF (radio frequency) and microwave filter is of great importance in the most of the microwave applications which are widely used in broadcasting radios, televisions, radar techniques, telecommunications and satellite applications. Most of the microwave devices contain microwave filter blocks …
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Multimode and Multiband Microstrip Antennas
… of such structures is similar to those used in microwave filter design. Using techniques normally employed in filter synthesis, the equivalent circuits can be generated, and aid in finding the couplings and dimensions of the specified antenna requirement. The bandwidth of circular microstrip …
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X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver
… of the specifications of the anti-aliasing filter used in a direct digitization receiver as well as the image reject filter used in the heterodyne receiver. The design of a wideband microwave filter capable of meeting these specifications is also presented. To conclude this investigation, …
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Modeling of conductor surface roughness effect
… with measurement data. In addition, a microwave filter is modeled using the compound conductor approach.
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Opto-VLSI-based adaptive optical power splitter/combiner for next generation dynamic optical telecommunication networks
… We also propose and demonstrate a photonic microwave filter based on the use of an Opto-VLSI-based adaptive optical combiner. The experimental results demonstrate that the developed Opto-VLSI-based adaptive optical combiner can dynamically route multiple input optical signals to a single …
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Reflected Group Delay method with Space Mapping Techniques for Coupled-Resonator Filter Design
The RF (radio frequency) and microwave filter is widely used in various applications in the fields of radio broadcasting, radar, telecommunication and satellite technologies. The design methods of RF and microwave filters are important topics, especially for electromagnetic (EM) based design. In …
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Miniaturised bandpass filters for wireless communications
… in the development and realization of RF and microwave filters, which have not only sustained but fuelled microwave filter research over the many years. These developments have encouraged new solutions and techniques for the realization of compact, low loss, highly selective RF and microwave …
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Stochastic modeling in computational electromagnetics
… cross sectional parameters, and a band pass microwave filter with randomly positioned loads. The thesis focuses on methodologies for the assessment of structures exhibiting localized uncertainty, namely random changes in the geometric and material properties occurring throughout the structure …
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Microwave Overlay Capacitor Fabrication on Printed Circuit Boards
… the manufacturing stage was employed. A bandpass filter on PCB was designed for high frequency measurements and BST composite material electrical characterization. This is due to relative permittivity changing with frequency. The BST composite film recipes were developed using commercial powder …
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Effective modeling of advanced filters and multiplexing networks
Microwave filters and multiplexers are widely used in all types of electronic systems. This research focuses on advanced filters and multiplexers for applications in communication satellites with stringent requirements and specifications. Conventional modeling techniques are typically either based …